those are nice... here is how i got mine to host...
I started with 2 Wyoming whites and 2 nearly naked. Had them for almost 2 years and a bunch of anemone and no one ever hosted....
I lost 1 naked and decided to get some new ones, got 2 baby mocha and 1 domino. They were pretty small so i was afraid to just drop them in. I literally bought a 2 gallon poland spring bottle cut the cap section off, drilled a bunch of holes all over for flow, thew the clowns in there and threw a bubble tip in there.
in a week maybe 2 they were hosting. (the new ones).
Once i let the new ones free in the tank, after about 4 weeks total, the naked started hosting immediately from watching the new ones.
If your going to try the bottle approach make sure its big enough for them, CLEAR, not the while milky type, and plenty of holes for flow through.
dont force them onto a nem, but make it a likely option for them.
Straight up 2 years none of my clowns hosted until they
saw the new clowns hosting.